Control shutter for engine radiators



Feb. 21, 1928: 1,660,145

4 D. M. WINANS CONTROL sHuTTEfi FOR ENGINE RADIATORS Filed June 1. 1926 2 Sheets-$heet 1 7 DANIEL M. WINANS INVENTOR.

ATTORNEY Feb. 21, 1928. 1,660,145

D. WINANS CONTROL SHUTTER FOR'ENGINE RADIATORS Filed June 1, 1926 2 Sheets-Sheet .3

I l DANIEL M. WINAN5 INVENTOR.

ATTORN IIY Patented Feb. 21, 1928.

UNITED, STATES PATENT OFFICE.

DANIEL M. WINANS, OF BINGHAMTON, NEW YORK, ASSIGNOR TO THE BREWER- TITCHENER CORPORATION, OF CORTLAND, NEW YORK, A CORPORATION OF NEW YORK.

' CONTROL SHUTTER FOR ENGINE RADIATORS.

Application filed June 1,

This invention more particularly relates to improvements in manually-operated dashcontrolled shields or shutter fronts as applied to air-cooled radiators for motor vehicles, especially such in wh1ch a supplemental shutter supporting frame is adapted for convenient attachment to or removal from the engine radiator without requiring constructive changes in existing cars. One

of its objects is to provide a simple, durable.

A further important object is to provide for simple and improved means to selectively cut off the air draft through the bottom half of the radiator core passagcs and to this end, the plural shutters of the present device have been divided to operate in distinct sections or groups, and these are equipped :with suitable manipulating bar means provided with a clutch device adapted to regulably actuate said shutter sections in dif \Vith the clutch en-' ferent combinations. gagcd, all of the shutters may be made to open or close simultaneously but when dis-v engaged. the upper slat section remains operative while the lower group of shutters may be dropped from said bar and left standing in closed position for the purpose of better protecting the lower portion of the radiator against freezing in extremely cold weather. Effective self-locking screwcontrolled adjustment means provide for conveniently meeting various changes in atmospherie or road travel conditions,. and when all the shutters are kept fully closed, this allows the cooling system to Warm up more rapidly upon starting the motor.

To this end and the accomplishment of other new and useful results, the invention further consists in novel constructive features, combination and arrangement of its several parts, all of which will hereinafter be more fully described and claimed.

Reference is had to the accompanying two sheets of drawings which are illustrative of a specific embodiment of my invention as applied to a motor radiator, in which 1926. Serial No. 112,771.

like characters of reference indicate like parts, and in which drawings:

Fig. 1 is a vertical elevation in partial section showing a general arrangement of my dished shutter frame applied to the front face of an automobile radiator and also my improved manually operated slat actuatl ng devices comprising a screw control carried up and attached to the dash or-instrumcnt board of the vehicle for manipulation from the drivers seat.

Fig. 2 represents an elevational rear view of my assembled shutter frame showing the latch device in partial section and the upper group of slats standing in open position while the bottom slat group is disengaged and thrown into its inoperative or closed position. i

Fig. 3 is a sectional view as taken along line 33 of Fig. 2. v

liig2'4t is a partial bottom View of the right corner of Fig. 2 showing the position of the latch plate when the bar clutch is disengaged. while Fig. 4 is a similar View showing said. plate thrown into its clutch engaging position when all the shutters move in synchronism.

. Fig. ,5 shows a bottom view detail of the screw type of dash control for adjusting the actuating linkage of my shutter.

Fig. 6 is a sectional View as taken along line 66 of Fig. 2 and indicates in detail certain features of my improved anti-rattler 'device as applied to the slat trunnions.

Fig. 7 illustrates the shutter slat construction While Fig. 8 is an end view thereof.

Fig. 9 shows in detail one of the inserted slat racks as secured to the respective side pieces of my shutter frame, and Fig. 10 is a sectional view as taken along line 10.10 .of Fig.9.

Fig. 11 is an elevational view of my assembled shutter frame similar to Fig. 2 except that the actuating bar for the lower group of slats is now engaged and made to open these slats in unison with theupper group of slats.

- Referring more particularly to said 'drawopenings .or cells extending lengthwise of the vehicle and between the front and rear core faces in the conventional manner. It is preferred to work with a shield or shutter frame that is centrally bumped or dished and provides for a flat flared flange held in place by long bolts extending through the core with the marginal flange fitting mounted adjacent to a portion of the front of the. core face so as to substantially command the core openings and permit of controlling the flow of cooling air through such core passages'as remain unobstructed.

My fenestrated endless or one-piece rectangular frame housing as such is designated other or inwardly disposed leg thereof forms a flat open face B which is s aced fromand lies substantially parallel to the plane of said brim to constitute a centrally dished" frame portion wherein my shutter slats are pivotally mounted to command the frame fenestration which opening contour is defined by the lip B If desired, the inner edge of said opening may be inturned in a normal relation to said face B to form an endless lip or moulding member 13 that trims the opening of this hollow frame as indicated in Fig. 3. o

Removably fitted against each inner face of the respective side pieces by means of suitable bolts C or the like, is inserted a slat rack O such 'asshown in Fig. 9, and this is provided with spaced trunnion apertures or bearings such as C G etc. The disposition of said racks is indicated in the frame assembly Fig. 2 and it will be observed that in this illustrative disclosure, there has .been provided only two groups of damper slats or shutters, namely an upper slat group or distinct sectional unit preferably comprising the consecutive slats D D D etc., and a lower slat group or distinct sectional unit c0mprising the consecutive slats D D etc the respective trunnions thereof being ro- ,tatably mounted in the apertures C G etc. of said slat racks. Each such shutter group may be provided with independent tie bar linkages so that these sections may be separately manipulated in the manner presently to be described from which it will become evident that the same underlying principle may also be applied to more than two such shutter sections and that the slats thereof need not necessarily be grouped in consecutive order.

When closed, the adjacent edges of the parallelly mounted shutters preferably overlap each other somewhat to form an effective seal for the air flow through the radiator core. The proportions of the slat are preferably such that when closed, the offset swingin edge of one slat may be made to substantially abut the outer surface of the adjoining tubular trunnion portion of the next adjacent slat in the fashion indicated by the lower closed section in Fig. 2; and it will further be observed that the slats are kept relatively narrow to admit'of opening them inward toward the adjacent radiator core face but without interference therewith. The complementary demountable slat racks such as C are snugly nested within their respective side pieces B and 191 and designed to make the inturned bearing flange C of these racks fall behind their adjacent frame lips B as shown in Fig. 6, the length of the slats being preferably kept slightly shorter than the span distance between the inner faces of said lips 'to allow the consecutive slats to close thereagainst and present a neat trimmed appearance. One of the transverse slat edges is further equippedwith an integral actuating'arm D which may initially be stamped out integrally therewith and then bent up in a normal relation to. the face as shown. Said arm.D is provided with a perforated hole or boss D whieh is freely fulcrumed to its tie bar and operated thereby.

All slats are preferably similarly con-\ structed and the slats of each separate group are connected together into a unit section for the purpose of opening or closing the upper and lower slat sections independently of each other. If desired, both slat sections their respective trunnions and cause them to be held in any desired fixed pivotal position.

This bar E, is shown concealed within the dished portion of my frame B so as to bestow a neat external finish to my shutter front and prevent marring the appearance of the car radiator to which it may be applied. In like manner, the slats D, 1),, etc. comprising the lower section are connected together through a Separate shorter tie bar E, which similarly actuates in unison all the slats D D etcl; said bar is equipped with a lower extension member E the extremity of which may be rounded and made to lie flush with the outer face of the sloping web wall 18 when the lower slat section is closed, all as is indicated in Fig. 3. It will be further observed that the middle portion of the upper tie bar E is laterally offset at E and terminates in a downward extension E, which lies alongside the lower tie bar E and projects beyond the rounded end of said extension E when set in the adjusted position represented by Fig. 2.-

In the present disclosure, both bar extension members are adapted to projectand freely slide through a suitable slot B cut into the sloping web wall of the end piece B and these members are provided with interconnecting clutch means designed to be engaged or disengaged for cooperative purposes. The outermost extension E, may be provided with an aperture or female part E while the inner extension E may be equipped with an overhung clutch pin or male part E adapted to fall into said aperture E when the pin is made to move into alignment therewith. In order to allow of an automatic engagement of these clutch parts, the extension E may be given a small initial bend for the purpose of maintaining a continuous resilient side thrust against the overhung pin E mounted in the adjacent cooperating bar E and if desired, said extension members may be held in proper alignment by the use of su table guide sleeves or the like (not shown).

The outer face of the transverse bottom web wall B carries a latch plate E swivelly mounted thereon by means of the fulcrum E said latch may be further equipped with a rounded toe or cam element E adapted to bear against the face of the free lower end of said longer bar extension E, and this toe serves to thrust said extension outwardly and away from the fulcrum E whenever.

said latch is forced into the position indicated in Fig.4, an upturned finger piece E being provided to facilitate such manipu lation. It will be observed that my entire slat actuating mechanism except the tie-bar extension, is mounted and concealed within the frame housing in a manner suited to properly meet present day sales resistance,

also that my clutch devices have been centralized and the control thereof brought outside of the frame proper where it can be conveniently manipulated.

The outermost tie bar E is further pro- .vided withastanchion or overhung pin E adapted to engage a hook end of the helical spring E or other suitable resilient tensioning means, while the other end of this spring may be attached 'to the fixed post E preferably riveted into the inserted slat rack C and made removable therewith. The essential function of the spring E is to resiliently oppose rotation of slats in one direction and bring about the automatic return of the slats into initial position whenever the actuating 'force is released. Said spring may be initially stretched to bring a substantial tension to bear between said spaced pins E and E and is preferably disposed to exert an pulley C the latter being preferably secured to one of the racks by means of the bracket 0 as shown in Figs. 9 and 10 and made removable therewith. The lateral disposition of the pulley C is preferably made to fall within the width of the core A as indicated so that said cable A may be run through one of the radiator core passages and carried back under the engine hood to the dash or instrument board A in the manner shown in Fig. 1. The cable is then manipulated by means of a screw-type control device which as a unit is preferably placed in juxtaposition to the vehicle seat and in convenient reach of the driver.

As detailed in Fig. 5, my distant shutter control device is designated in its entirety as F and preferably comprises a forked clamp or other suitable body member F which in the present showing is adapted to straddle said board A, and to be 'removably secured thereto by means of a lock screw F or the like, all without requiring a hole to be bored through the board A or otherwise defacing the same when the clamp is removed. Said clamp may further be equipped with depending body lug F and a suitable fulcrum pin F therefor upon which is mounted a multiplying lever F One of said lever ends may be provided with a series of spaced holes such as F into one of which but moderate effort and thus easily open the upper slats against the resistance of the spring E Such distant control equipped with my self-locking thumb screw regulating device imparts to the cable a delicate Vernierlike adjustment and permits of accurately setting and holding the shutters against slat tension into any position withoutbeing obliged to resort to a stepwise or other similar coarse regulation.

It is emphasized that by virtue of my dis- Attached tant screw control device, this wedge agency easily moves the interconnected slats through the cable connection from one into any other setting with perfect continuity and certainty of action. Furthermore, where the tie-bar is used in cooperation with my described screw adjustment means, the multiplying efiect given to the lever thereof can obviously be made to reduce to a minimum the screw turns needed for changing the slat setting. Such simultaneous slat and lever operations ofier a further advantage in that the thread pitch of the thumb screw may readily be made sufliciently fine to allow of a convenient slat manipulation without obliging the shutter user to pull directly by hand against full tension of the cable return spring. It is preferred to resort .to a relatively strong spring action in connection with my screw adjustment because the slats are then better held in position against heavy driving winds and unlikely to be jarred out of adjustment when subjected to uneven road or like disturbances.

While the clutch pin E is held out of engagement with its cooperating aperture E by placing the latch plate E in the position shown in Fig. 4 the cable A is not allowed to move the lower slat section. Furthermore, in order to better hold these disengaged shutters in fixed position, means are provided to augment the trunnion frlction of the various slats, and at the same time to serve as anti-rattler devices in case the trunnion bearings should become enlarged from excessive wear. For such purposes, I preferably provide for a pair of continuous flexible steel strip members such as Cl extending lengthwise of the respective slat racks such as C and crosswise of the respective ends of each slat mounted therein, as indicated. Each such strip is arranged to span, its adjacent trunnion ends and is intended to resiliently bear thereagainst. In order to set up the desired adjustable or followup thrust for all the trunnions, each rack "G is further equipped with a series of inturned strip clips C disposed intermediate the respective trunnion bearings such as C G etc., shown in detail by Fig. 9. The tension which the bridging strip is made to exert upon the respective trunnions is regulated by. the extent to which the various spaced clips are sprung down against the top of their underlying strip 0 and it is pointed out that by this means it becomes possible to independently adjust the degree of friction and also take up wear on part of any individual trunnion in order to maintain any desired trunnion action as a whole. It will be apparent when the lower slat section is drawn into open or closed-shutter position, such adjusted trunnion friction allows of retaining such setting against ordinary car vibration foreshortened with respect to the extremity of the adjacent extension E the respective length being such that when the lower slat section coi'nprising slats D D etc., is moved into closed position by turning the thumb screw F the rounded extremity 'of said extension E will be fully raised and lie flush ,with the top of the face of the.

latch plateE whereupon the latter may be pressed home underneath the tie bar E and thus hold the same in place. This in turn, locks the lower shutter section in closed position, but in order to allow the plate E to be fully turned toward the adjacent brim portion B as shown in Fig. 4, its toe E will at the same time wedge the longer bar extension E away from the adjoining bar E as is indicated in Fig. 2. Hence, when the plate E has been allowed to assume this latched position, the clutch in E will have been withdrawn out of the ar aperture E and thus allow the upper-slat section to be.

regulably opened or closed independently of the locked lower section. This particular latch plate setting is intended to apply when it isdesired' to protect the lower portion of the radiator against freezing.

In the event that it is desired to pick-up the lower slat section and actuate the same in unison with the upper slat section, the latch plate E must be deliberately turned outwardly and away from the frame brim as shown in Fig. 4 which releases the resilient tie bar extension E and allows the same to slidably ride upon the overhung clutch pin E carried by the other bar E When thereupon the upper slat section is also brought into its closed position by furthermanipulating the adjusting screw F this will draw the bar E upward until its aperture E falls into alignment with the pin E whereupon the clutch device "becomes engaged and the two interlocked tie bars E and E are obliged to move in synchronism and thereby cause all the shutters to operate likewise from said dash control. I Should itbe desired to again bring about a disengagement of the interlocking clutch device, all the shutters are preferably drawn into their closed position which in turn raises the, tie bar extensionE into its extreme upper position and allows the latch plate to enter underneaththe same, when the toe E again wedges the bar extension.

E apart from the bar E and withdraws the clutch pin E in the manner previously described. Furthermore, should the cable A unwittingly become ruptured, the described resilient urge on part of the spring E will then throw the slats into open position and prevent possible damage by overheating the car motor.

The present shutter devices are especially designed to facilitate economical manufacture and convenient assembly of the movable parts, and by the use of the described rack members, replacementof any defective slat or repairs to the actuating mechanism may easily be made.

It is further pointed out that in the present invention the slot sections are not successively operated as has heretofore been conventional practice, but instead a certain slat section may be selectively disengaged and thrown out of action with respect to the active tie-bar movements but when the clutch means are placed into operative connection, all such shutters are made to move together in exact synchronism or phase relation, and this particular mode of manipulating the respective shutter sections affords a number of outstanding advantages especially as regards extreme simplicity of mechanism and reliability of action for the purpose intended.

Not only is the described slat mechanism concealed within the dished portion of my shutter front but the unitary screw type of dash control is operatively connected therewith by a flexible cable which latter may also be concealed under the engine hood. Such improved cable disposition combined with said screw manipulation of the slats enhances the marketability of my shutter and represents a thoroughly practicable enmore particularly pointed out in the ap-' pended claims.

I claim 1. In a radiator shutter arranged to ad- 'justably control air flow therethrough, a

frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein adapted to move between open and closed positions and which slats are divided into a number of distinct groups of several slats each to constitute separate sectional units, an independent tie-bar means mounted within said frame for interconnecting the respective slats comprised in each such group and of which one such bar is provided with an extension member slidably disposed in overlapping co-operative relation to another adjacent bar, spring means urging said slat units into open position, operating means for simultaneously actuating all of said shutter sections in synchronism against spring tension, and clutch means acting between the extension memher and said adjacent other bar for disconnecting a sectional unit from the others to render said one unit inoperative.

2. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein and adapted to move between open' and closed positions, said slats being divided into a number of distinct groups of several slats each to constitute separate sectional units, an independent tiebar means mounted within said frame for interconnecting the respective slats comprised in each such group and of which one such bar is provided with an extension member slidably disposed in overlapping co-operative relation to another adjacent bar, tension means resiliently opposing slat rotation in one direction of'movement, operating means for simultaneously actuating all of said shutter sections in synchronism against spring tension, clutch means acting between the extension member and said adjacent other bar for disconnecting a sectional unit from the others to render the same inoperative, and means latching said inoperative unit in closed shutter position.

3. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into a number of distinct groups of several slats each to constitute separate sectional units, an independent tiebar means for interconnecting the respective slats comprised in each such sectional unit, a clutch device adapted to interlock two of said tie-bars, means for simultaneously disengaging said clutch and locking one of :aid last named tie-bars in closed slat posi- 4. In a radiator shutter arranged to adjustably control air flow thcrethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein adapted to move between open and closed positions and which slats are divided into a number of distinct groups of several slats each to constitute separate sectional units, an independent tie- .bar means mounted within said frame for interconnecting the respective slats comprised in each such sectional unit and of' which one such bar is provided with an extension member slidably disposed in overlapping co-operative relation to another adjacent bar, spring means urging said slat units into open position, operating means for actuating the aforesaid one tie bar, and a clutch device associated with said extension member and adapted to interlock the aforesaid another tie-bar therewith for simultaneously operating both bars in synchronism.

"5. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein adapted to move between open and closed positions and which slats are divided into a number of distinct groups of several slats each to constitute separate sectional units, an independent tie-bar means concealed within said frame for interconnecting the respective slats comprised in each such sectional unit and of which one such bar is provided with an extension member slidably disposed in overlapping co-operative relation to another adjacent bar, spring means urging said slat units into open position, a clutch device acting between the extension member and the aforesaid adjacent bar for interlocking purposes, and slat actuating means including a cable which during the engagement of said device is adapted to move the aforesaid other bar through the medium of said one bar having the extension member.

6. In aradiator shutter arranged to adjustably control air flow therethrough, a

frame member provided with a plurality" of parallelly disposed shutter slats pivotally mounted therein to move between open and closed positions and which slats are divided into a number of distinct groups of several slats each to constitute separate sectional units, an independent tie-bar means for interconnecting the respective slats comprised in each such sectional unit and of which one such bar is provided with an extension member slidably disposed in overlapping re lation to another adjacent bar, spring means urging said slats into open position, operating means for actuating said sectional units against spring tension, and control means associated with Said extension and adapted to co-operate with 'the aforesaid other bar to allow said one sectional unit to operate while said another unit remains inoperative.

7. In a radiator shutter arranged to adjustably control air flow therethrough, a slotted frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein which slats are divided into two groups comprising several slats each to constitute separate upper and lower sectional units, an independent tie-bar for each of said units, the respective tie-bars being provided with extension members adapted to freely project through the frame slot, clutch means serving to interlock said tie-bars, and latch meansndisposed outside of said frame and adapted to manipulate said clutch for disengaging purposes.

8. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into two groups comprising several slats each to constitute separate upper and lower sectional units, an independent tie-bar concealed within said frame for each of said units and of which one such bar is provided with an extension member disposedin overlapping co-operative relation to the other bar, spring means exerting an opening tension upon the upper slat unit, actuating means adapted to adjust the setting of said upper unit in any desired position against spring tension, clutch means disposed between said extension and the aforesaid other bar adapted to detachably connect said units and serving to impart a synchronized movement to both units in response to a change in setting on part of the upper unit.

9. In a radiator shutter arranged to adjustab'ly control air flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into two groups comprising several slats each to constitute separate upper and lower sectional units, an independent tie-bar for each of said units, actuat ng means operatively connected to both of said tie-bars and adapted to adjust the setting of all of the slats in one and the same po- 'sition, means serving to disengage said units and lock the lower unit in its closed position while the upper unit remains operative.

10. In a radiator shutter arranged to ad justably control. air flow therethrough, a

frame member provided with a plurality of,

parallelly disposed shutter slats pivotally llQ mounted therein and adapted to movebetween open and closed positions, said slats being divided into two groups comprising several slats each to constitute separate upper and lower sectional units, an indepen ent tie-bar concealed within said frame for each of said units and of which one such bar is provided with an extension member disposed in overlapping co-operative relat on to the other bar, actuating means including a clutch device operatively connecting the 11. In a radiator shutter arrangedto ad-' justably control air -flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into two groups comprising several slats each to constitute separate upper and lower sectional units, an independent tie-bar for each of said units, actuating means including a clutch device operatively connecting the said tie-bars together, said actuating means being adapted to operate through the tie-bar of the upper unit and serving to set all of the slats in closed position prior to disengaging the clutch, and means including a clip member for augmenting slat trunnion friction to retain the lower unit in said closed position while the upper unit remains operative. I

12, In a radiator shutter arranged to control air flow therethrough, a frame member provided with spaced side-pieces eachprovided with trunnion apertures serving to mount therebetween a plurality of parallelly disposed shutter slats, the trunnion ends of each such shutter being adapted to project through their respective apertures in one of said side-pieces, a resilient strip member extending lengthwise of said one side-piece and arranged to span the protruding slat trunnions thereof, and clip means disposed intermediate certain of the last named trunnions and adapted to yieldingly hold said strip against said trunnions.

18. In a radiator shutter arranged to control air flow therethrough, a frame member provided with spaced side-pieces each provided with trunnion apertures serving to mount therebetween a plurality of parallelly dis osed shutter slats, the trunnion ends of eacli such shutter being adapted to project through their respective apertures in one of said side pieces, a resilient strip member extending lengthwise of said one side-piece and arranged to span the protruding slat trunnions thereof, and a plurality of clip means disposed intermediate certain of the last named trunnions and adapted to yieldingly hold said strip in en agement therewith, and adjusting means or changing the degree of tension imposed upon the trunnions by said strip. p

14. In an automobile radiator shutter arranged to control air flow therethrough by manual adjustment made from the drivers seat, a frame member provided with a plurality of shutter slats pivotally mounted therein, a reciprocative spring controlled tiebar disposed alongside one end of said slats and serving to rock the same in unison,

cablemeans attached to said bar and adapted to actuate the same against spring tension in one. direction of movement, and a lever fulcruined in juxtaposition to the drivers seat and operatively connected with said cable, and self-locking manually operable screw means adapted to impart a Verniersimultaneous Vernier-like like adjustment to the lever for setting of said slats in unison to any extent desired by the operator.

15. In an automobile radiator shutter arranged to control air flow therethrough, a

dashboard, a frame member provided with a plurality of shutter slats pivotally mounted therein, a spring controlled tie-bar disposed alongside one end of said slats and serving to rock the same in unison between open and closed positions, cable means adapted to actuate said bar against spring tension, a self-locking adjusting screw member carried by a body adapted to be detachably clamped to the dashboard, and a fulcrumed lever member operatively connected with said cable and engaged by the screw, both of the aforesaid members being placed in juxtaposition tothe drivers seatand adapted to be manually operated therefrom to adjustably set said lever and impart a setting to all said slats. i

16. In a shutter apparatus arranged to adjustably control air flow through an engine radiator core, a frame member comprising a pair of spaced side-piecesof Z shaped cross-sectional profile each being provided with an inturned lip member respectively disposed along the innermost edges thereof, an inserted slat rack equipped with spaced trunnion apertures secured alongside each of the respective side-pieces, said lip members being respectively disposed inwardly of and in overhanging relation-to their adjoining racks, and a plurality of shutters each having a trunnion projecting beyond the ends thereof respectively adapted to engage an aperture in each of said racks, said slats being arranged to open inwardly toward said core and to close against one of the inturned lip members.

17. In a radiator shutter front applied to automobile engine purposes and arranged to be manually adjusted from the drivers seat, the combination with a cellular core for the radiator having front and rear faces; a fenestrated dished frame member disposed adjacent to the front face of said core with a plurality of shutter slats pivotally mounted to rock within the dished frame portion and control air flow through the frame fenestration; a reciprocative tie-bar. concealed within said dished frame portion and serving to interconnect one end of the respective slats; tension means resiliently opposing slat rotation in one direction of movement; cable means extending through the radiator core and adapted to simultaneously rock said plural slats; a body member having a fulcrum located in juxtaposition to the drivers seat; a lever mounted on said fulcrum and operatively connected to the rear end portion of said cable; and a manipulative self-locking screw means cooperating 18. In a radiator shutter apparatus applied to automobile engine purposes an arranged to be manually adjusted from the drivers seat, the combination of a fenestrated frame provided with a plurality of shutter'slats pivotallymounted to rock within said frame and control air flow through the fenestration thereof, said slats being divided into groups of several slat-s each to constitute separate sectional'units; separate reciprocati've tie-bars mounted Within said frame and respectively interconnecting the slats comprised in each such unit; a coupling means acting between said tie-bars adapted to release a sectional unit and render the latter inoperative with respect to the slats of the remaining units; tension means resiliently opposing rocking movement in one direction and serving to return said remaining slats into initial position; cable means adapted to actuate said remaining slats; a fulcrumed lever operatively connected to said cable; and a cooperating screw means adapted for manipulation from the drivers seat to pull the cable against the resilient opposition of said tension means and simultaneously set said remaining operative slats through self-locking spiral wedge action into any position of adjustment.

In testimony whereof, I have herewith set my hand this 28th day of May, 1926.

, DANIEL M. WINANS. 

